Apparatus for purifying water.



J. M. NOLL.

APPARATUS FOR PURIFYING WATER.

AFPLICMION FILED SEPT-22. 1910.

Patented Aug. 3, 1915.

4 SHEETS-SHEET CDLUMBIA PMNWRAPN COqWASHlNGTON. D. C.

1. M. NOLL.

APPARATUS FOR PURIFYING WATER. APPLlCATION FILED SEPT- 22. 1910.

1,148,920. Patenfed Aug. 3, 1915.

4 SHEETS-SHEET 2.

. COLUMBIA PLANOORAPH 00.,WA8HINBTON. D. c,

1. M. NULL. 7

APPARATUS FOR PURIFYING WATER.

APPLICATION FlLED SEPT. 22, 1910- 1,148,920. Patented Aug. 3,1915.

4 SHEETS-SHEET 3- COLUMBIA PLANouRAPH CO-,WASHINGTON D. c.

J. M. NOLL.

AFPARATUS FOR PURIFYING WATER.

APPLICATION FILED SEPT. 22. 1910.

1,148,920 Patented Aug. '3, 1915,

4 SHEETS-SHEET 4- M &.

CGLUMBIA I'LANOGRAPH 00.,WASHWGTON, D- c.

ime armrr orrro JACOB M. NOLLOFCOLIJNGSWOOD,1\TEW JERSEY, ASSIGNOR TOWARREN WEBSTER 8;

COMPANY, A oonroanrron or NEW JERSEY.

arranarns FOR PURIFYING WATER.

S pecificationof Letters Patent.

Application filed September 22, 1910. Serial No; 583,153.

To all whom 2'22 mag/concern:

Be it known that I, JAcoB M, .NoLL, a citizen of the United States, andresident of Collingswood, Camden county, State of New Jersey, haveinvented an Improvement in Apparatus for Purifying Water, of; which the,following is a specification.

' i invention relates 'particularlyto what is known as the hot processof water puri fication in which achemical in solution is introduced intoa Water heating chamber for the purpose of precipitating, and thusremoving, mineral impuritiesinqthe water.

i While the principal application of the invention is to feed waterheaters for the purpose of purifyingwater for boiler feed, the

invention is also applicableto any systemof water purificationby thehotprocess, as in dye-houses, laundries and chemical works.

In, carrying out my invention I mount the chemical-t'ank, in which thesolution is made, abovethe heater-chamber, so as to be subjected totheheat thereof, and discharge the solution directly from that tank intothe heater chamber. I

In the preferred arrangement, the chemical tank is in a shell or casing,which extends above the casing of the heater-charm her, and forms asteam jacket, in communication with the interiorof the heater-chamber.

all times, andthis not only facilitatesthe making of the solution, butalso prevents re not onlyin the tank itself,

' in pressure before referred to. The maintenance of this equalizationof the pressures is made possible by the steam jacketing efiect asobtained by the construction described, since the, temperat'urein thechemical tank is kept'at approximately the temperature of theheater-chamber, and prevents a change in density of thechemical solutionwhich would occasioned, should condensation of the steam passing throughthe equalization pipetake place in the'chemthe. filter-chamber 7,

The chemical tank is thus kept hot at ical tank. This combination of thechemical Patented Aug, 3, 1915.

tank with the heater-chamber not only obviates the functionaldifliculties referred to,

but provides an apparatus that is much simpler, less expensive andeasier to erect.

In the drawings: Figure 1 is a vertical sectionalelevation of theapparatus, Fig, 2

is an elevation; of the discharge side of the apparatus witha part ofthe casing of the filtering and purifying chamber broken awayand theadjacent. portion of the filter inverticalsectiong Fig. 3 is anelevationof apparatus ongan enlargedscale;'and Fig. 4 is a horizontal section onthe broken line A-A of Fig. 1 on an enlarged scale.

a is the heater-chamber, As shown, it is of the. open type provided witha series of wateretrays a, a steam inlet 6, a water in let;0,. adischargeoutlet d, and anoverfiow outlet 6. The discharge outlet (Zopens ;into

the upper portion of the supply-side ofthe of the heater-chamber iserected, and the water-inlet iscontrolled by a valve 0 which is in turncontrolled by a float in the filterchamber through suitableleversconnections c valve 6, in the overflo'wpipe 6 which is in turncontrolled by the float e in the heater chamber a, tions' 6 upon whichthecasing The overflow is also cont oiled by a through suitablelever-connecg is a vent and vacuum-breaker device to permit air toescape from the heater and preventformation of high vacuum which wouldinterfere with the operation of the, boiler-feed pump.

9 is a gage-glass to show the level of the 0 water .in theheater-chamber.

it is the chemical-chamber which is placed above the heater-chamber (1.This is con-.

. tained in a shell or casing in, secured to the top of theheater-chamber. or if desired made continuous therewith. The shell formsa steam-space or jacket hi about the chemis cal-chamber, into whichsteam from the heater-chamber may pass through suitable openings at:

j'is a valved openingin the top' of the chemical-chamber it through'which the chemicals may be introduced. As shown, theopening j is ofsubstantial size andcon bottom of the chamber lu'tion flows by gravitytrolled by a gate-valve. The chemicals are is "is a"pressure-equalizing-pipe between the steam jacket 7L2 and thechemical-chamber h: and is provided with a suitable valve is. Z is asteam-pipe, Z, extending" into the chamber h and pro vided at its lowerend with a steam jet by which steam is injected to agitate the contentsof the chamber ma thoroughly mix the water and chemicals together.

Z is a gage-glass, bet-weenthe top and h and having the usual valves Z mis the outlet for the chemical solution from the bottom of the chamberh. The sothrough the valve 11?) and sight-tube m to heater chamber. Asshown this inlet is placed below the water inlet c and immediately abovethe second tray, but the particular location of the inlet for thesolution isnot material. The valve m? is connected with the water-valvea, so asto operate with it, by suitable connections, such as the leversm*, 0* and link m r n is a valved outlet from the chamber h by whichtest samples maybe taken, and the contents may be drained off whendesired. a n" isa safety-valve from the steamjacket h f is a gage-glassbetween the lower part ofthe heater-chamber a and the upper part ofthechamber In the filtering and purifying chamber f are suitableprecipitating pans 0,0 provided with bathe-plates o over which the waterpasses to the inlets p, p

to the filtering devices; In the preferred construction, as shown, thefiltering-chamher is divided into two compartments 9 g by a partition9., each compartment containing a removable filter r, and the waterafter passing through passages ])2 29 above the filters, and afterpassing down through them is discharged throughthe outletss s to thefeedpump'. The filters'r r are preferably'constructed of perforatedboxes containing sand; The valves p 19 may be controlled independentlyof one another from the outside by the hand wheelspt. The outlets s 8may also be independently controlled by the valves 8. Thus either filtercompartment maybe closed to thepassage of water and the filter thereofremoved and replaced f through doorp without closing off the other 2 2?.are

compartment or interrupting the feeding of the pump.

drain pipes for: the precipitated which the drain pipes steam and waterby controlled by a valve the inlet m in the 1 through the valves p 1)goes up.

matter leading from the precipitating pans. he faces of these pans arepreferably inclinedtoward a central trough 0 from 25 lead.

, The operation is as.

is operated in the usual manner by admitting from the tank It throughthe valve m and inlet,m*f. When the chemical-tank requires refillingwhich is known by the definite time in" which the tank follows Theheater the inlets b and c, and the chemical'solution is supplied to thewater form is then introduced 'by a funnel through v the gate-valve j,and a sufiicient quantity of water is added to make the desiredsolution.

Steam is blown in through the pipe' il and stirs up and heats thechemical causing it to dissolve. Excess pressure may be avoid} ed byleaving the valve from the heating-chamber passes up into the jacket 72.about the chemical chamber h and'keeps it and the solution highlyheated.

When the chemical is dissolved and the j open. The steam I solution isof proper strength, the valve j is closed and the valve is in theequalizing pipe is is opened a An equilibriumv of pres? sures in thechemical tank andheater-chamber is thus establishedandis readilymaintained, and since the chemical-tank is surrounded by steam from theheating-.chamber, and-is therefore at practically the same temperature,little or the heater-chamber will take place in the chemical-tank, andthere will be no'material weakening of the solution. As the valve 0opens under the control of the fioat 0 to admit water to the heater thevalvem will be similarly opened no condensation, from and a quantity ofthe 1 hot chemical solution will. be admitted the tube m and inlet mThis admission of the chemicals and water takes placexat correspondingtimes so that the chemicals are being admitted only when the water isflowing As, the solution is thus maintained in a highly heated conditionwhen itris admitted to the heater-chamber the tendency torecrystallization will be reduced to a minimum, and the valve m and feedpassageway will 'bekept clean and efficient. 'i

The heated water containing the solution passes'through the outlet dinto. the chamber f and thence through the inlets 12, valves 22 andpassageways 22? into the compartments (1 above the filters 1', andfinally flows down through the filters to the outlets s and thence, tothe feed-water. pump.

The water. passes through the filters with p down-flow "andthis withsand filters results in a; very thorough filtration. The

sand filters maybe easily cleaned by reversing the flow, and eitherfilter; may be arate parts as shown, maybe used with puri-' tying andfiltering chambers of difierent sizes according to the quantity of waterto be treated. With relatively large purifiers and filtering chambersthe water continues for a longer time therein and increasesprecipitation and better purification may be had.

What I claim is as follows:

1. The combination with the heater-chamber of a feed-water heater, ofmeans for supplying the water to be heated directly into said chamber,means to supply steam to said chamber, an upper chamber locatedimmediately above said heater-chamber and in direct communication withthe interior thereof, a tank to contain chemical solution located withinsaid upper chamber and heated bythe steam passing into said chamber fromthe heater-chamber, and a discharge pipe. for the heated solutionleading from the chemical chamber to the heaterchamber.

2. The combination with the heater-chamber of a feed-water heater, ofmeans for supplying the water to be heated directly to said chamber,means to supply steam to said chamber, an upper chamber locatedimmediately above said heater-chamber and in direct communication withthe interior thereof, a tank to contain chemical solution located withinsaid upper chamber and of smaller size so as to form a steam jacketbetween the tank and chamber in direct communication with the heaterchamber, and a discharge pipe for the heated solution leading from thetank.

3. The combination with the heater-chamber of a feed-water-heater, ofmeans for supplying Water to be heated directly to said chamber, meansto supply steam to said chamber arranged below the means for supplyingwater thereto, a compartment to contain chemical solution located at ahigher elevation than the means for supplying water to the chamber andarranged to be heated by the steam passing into the heater chamber, adischarge pipe for the heated solution leading downward from thecompartment to the heater-chamber, and means providing a pressureequalizing passage between the heater-chamber and the compartmentcontaining the chemical solution.

l. The combination with the heater-chamber of a feed-water heater, ofmeans for supplying the water to be heated directly into said chamber,means to supply steam to said chamber, an upper chamber located im:

mediately above said heater-chamber and in direct communication with.the interior thereof, a tank to contain chemical solution located withinsaid upper chamber and heated by the steam passing into said cham-' herfrom the heater-chamber, saidhpper chamber forming a steam jacket abouttank, a discharge pipe for the heated solunon leading from the chemicalchamber to the heater-chamber, a pressure-equalizing pipe between thesteam jacket and tank, and a steam pipe leading into said tank to injectsteam into the contents thereof.

5. The combination with a heater-chamber of a feed-water-heater intowhich steam is supplied, of means for spraying Water into the chamber, aclosed tank wholly above the means for spraying the water into thechamber having its interior separated from the heater-chamber to containchemi-' cal solution separate from the feed-water and said tank havingits walls subjected wholly to the heat of the steam within theheater-chamber and out of contact with the water therein, and adischarge pipe leading from the tank to the heater-chamber anddelivering the chemicals by gravity to the means for spraying the waterinto the heater-chamber.

6. In a hot process system of water purification, the combination of awater heating chamber having means to supply the water and the steamseparately and directly into said chamber in contact with one another, atank to contain chemical solution arranged in direct communication withthe heating chamber so as to be directly subjected to the heat of thesteam therein, but independ ent of the water supply to said heater, anda. discharge pipe leading from the solution tank to said heating chamberto supply solution to the water therein.

7 In a hot process system of water purification, the combination of awater heating chamber having means to supply the water and the-steamseparately and directly into said chamber in contact with one another, atank tocontain chemical solution arranged in direct communication withchamberso as to be directly subjected to the heat of the steam therein,but independent of the water'supply to said heater, a discharge pipeleading from the solution tank to said heating chamber to supplysolution to the water therein, a pressure equalizing pipe between thesolution tank and the wa ter heating chamber, a valve mechanism tocontrol the admission the heating-chamber and at regulated periodscontrolled by the level of the water therein, a valve mechanism tocontrol the discharge of the solution from the solution tank into theheating-chamber at regulated the heating of water directly into 7 Water,and float actuated means for sunul nnto set my hand. taneously operatingsaid. valve mechanisms whereby theadmission ofthe chemical soluperiodstimed With the admission oi; the In testimony of which invention, I hereJACOB M. NOLL.

I 5 tion to the heating chamber will always Witnesses:

occur when the Water is being admitted ROBERT RICHARD H NTER, thereto. 1I J. LOGAN Fi'rTs.

Copies of: .thispatent may be, obtained for five cents each, byaddressing the Commissioner of Patents.

' I I Washington, D. 0.

